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Repurchase Agreements: Schedule of Repurchase Agreements (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013
Disclosure of Repurchase Agreements [Abstract]
Average daily balance during the period	$ 352
Average daily interest rate during the period	0.05%
Maximum month-end balance during the period	$ 787

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- Definition

No authoritative reference available.

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+ Details

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Namespace Prefix:	tsbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

No authoritative reference available.

+ References

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+ Details

Name:	tsbk_RepurchaseAgreementsAverageDailyInterestRateDuringPeriod
Namespace Prefix:	tsbk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	tsbk_RepurchaseAgreementsMaximumMonthEndBalanceDuringPeriod
Namespace Prefix:	tsbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

Name:	us-gaap_DisclosureOfRepurchaseAgreementsAbstract
Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration